lsmtk 0.15.0

lsmtk provides a log-structured-merge-graph
Documentation 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159

use std::fs::{File, read_dir, remove_file};
use std::path::PathBuf;
use std::sync::Arc;
use std::time::SystemTime;

use arrrg::CommandLine;
use biometrics::{Collector, PlainTextEmitter};
use zerror::Z;

use lsmtk::{IoToZ, LsmTree, LsmtkOptions, TRACING};

fn main() {
    let (options, free) =
        LsmtkOptions::from_command_line("USAGE: lsmtk-watch-for-ingest [OPTIONS]");
    if !free.is_empty() {
        eprintln!("command takes no arguments");
        std::process::exit(1);
    }
    std::thread::spawn(|| {
        let collector = Collector::new();
        sst::register_biometrics(&collector);
        lsmtk::register_biometrics(&collector);
        let fout = File::create("/dev/stdout").unwrap();
        let mut emit = PlainTextEmitter::new(fout);
        loop {
            let now = SystemTime::now()
                .duration_since(SystemTime::UNIX_EPOCH)
                .expect("clock should never fail")
                .as_millis()
                .try_into()
                .expect("millis since epoch should fit u64");
            if let Err(e) = collector.emit(&mut emit, now) {
                eprintln!("collector error: {e}");
            }
            std::thread::sleep(std::time::Duration::from_millis(249));
        }
    });
    let root = PathBuf::from(options.path());
    let tree = Arc::new(LsmTree::open(options).as_z().pretty_unwrap());
    let emitter = indicio::protobuf::ProtobufEmitter::new("clues", 1 << 30)
        .as_z()
        .pretty_unwrap();
    TRACING.register(emitter);
    TRACING.set_verbosity(indicio::INFO);
    let tree_p = Arc::clone(&tree);
    let _compactor = std::thread::spawn(move || {
        loop {
            if let Err(err) = tree_p.compaction_thread() {
                eprintln!("{}", err.long_form());
            }
        }
    });
    let tree_p = Arc::clone(&tree);
    let _compactor = std::thread::spawn(move || {
        loop {
            if let Err(err) = tree_p.compaction_thread() {
                eprintln!("{}", err.long_form());
            }
        }
    });
    let tree_p = Arc::clone(&tree);
    let _compactor = std::thread::spawn(move || {
        loop {
            if let Err(err) = tree_p.compaction_thread() {
                eprintln!("{}", err.long_form());
            }
        }
    });
    let tree_p = Arc::clone(&tree);
    let _compactor = std::thread::spawn(move || {
        loop {
            if let Err(err) = tree_p.compaction_thread() {
                eprintln!("{}", err.long_form());
            }
        }
    });
    let tree_p = Arc::clone(&tree);
    let _compactor = std::thread::spawn(move || {
        loop {
            if let Err(err) = tree_p.compaction_thread() {
                eprintln!("{}", err.long_form());
            }
        }
    });
    let tree_p = Arc::clone(&tree);
    let _compactor = std::thread::spawn(move || {
        loop {
            if let Err(err) = tree_p.compaction_thread() {
                eprintln!("{}", err.long_form());
            }
        }
    });
    let tree_p = Arc::clone(&tree);
    let _compactor = std::thread::spawn(move || {
        loop {
            if let Err(err) = tree_p.compaction_thread() {
                eprintln!("{}", err.long_form());
            }
        }
    });
    let tree_p = Arc::clone(&tree);
    let _compactor = std::thread::spawn(move || {
        loop {
            if let Err(err) = tree_p.compaction_thread() {
                eprintln!("{}", err.long_form());
            }
        }
    });
    let tree_p = Arc::clone(&tree);
    let _compactor = std::thread::spawn(move || {
        loop {
            if let Err(err) = tree_p.compaction_thread() {
                eprintln!("{}", err.long_form());
            }
        }
    });
    let tree_p = Arc::clone(&tree);
    let _compactor = std::thread::spawn(move || {
        loop {
            if let Err(err) = tree_p.compaction_thread() {
                eprintln!("{}", err.long_form());
            }
        }
    });
    let tree_p = Arc::clone(&tree);
    let _compactor = std::thread::spawn(move || {
        loop {
            if let Err(err) = tree_p.compaction_thread() {
                eprintln!("{}", err.long_form());
            }
        }
    });
    let tree_p = Arc::clone(&tree);
    let _compactor = std::thread::spawn(move || {
        loop {
            if let Err(err) = tree_p.compaction_thread() {
                eprintln!("{}", err.long_form());
            }
        }
    });
    loop {
        std::thread::sleep(std::time::Duration::from_millis(1_000));
        let mut ingest = Vec::new();
        for entry in read_dir(root.join("ingest")).as_z().pretty_unwrap() {
            let entry = entry.as_z().pretty_unwrap();
            ingest.push((
                entry.metadata().as_z().pretty_unwrap(),
                entry.path().to_path_buf(),
            ));
        }
        ingest.sort_by_key(|x| x.0.modified().expect("platform should provide mtime"));
        for (_, path) in ingest.iter() {
            tree.ingest(path).as_z().pretty_unwrap();
        }
        for (_, path) in ingest.into_iter() {
            remove_file(path).as_z().pretty_unwrap();
        }
    }
}